Shock-absorber for automobiles.



w. P, com SHOK ABSURBER POR TMBILES APPLGTIOH FXLED SEPT'. 1 0, 19m.

wij.

2 SERES-SHEET 1,

Patented Apr. s, 1913. A'

2 SHEETS-SHEET 2.l

UNITE STATES PAflElVl"l OFFICE.

warren ii. econ, or New catalans, Louisiana.

SHOCK-ABSORBER FR AUTOMOBILES. l

noaaaia,

T0 aZ whom z' may concern.'

.Be lit known that l, VALTER H. Cook, a' citizen of the United States, residing at- New v(lr-leans, in the parish of Orleans and State of Louisiana, have invented new and useful Improvements in Shock-Absorbers for Automobiles, of which the following is a specification.

Thisinvention relates to improvements inv shock absorbers o-f the general type illustrated in my co-pending application Serial No.7(l9098 wherein avbalanced shock transmitting element operatively connected to the main spring is eiiiployedin coaction with a cushioning means, preferably an air cushion, which takes its bearings against the main frame or a part fitted thereto and against the shock transmitting element.

rlhe present shock absorber is especially designed for automobiles of the underslung type wherein the chassis is hung below the axles, and the invention consists in the novel organization of the elements aforesaid and their appurtenances whereby the same advantages which are secured by the construction shown in my co-p'ending appli` cation referred to, may be secured in connection with automobiles having underslug frames and in a construction of simple and compact nature. y

Embodiments of the invention are illustrated in the accompanying drawings, wherein Figurel l is a side elevation showing the improvement in connection with a main frame which has relatively deep end goosenecks. Fig. 2 is a similar view showing a slightly modified construction for use with a main frame which has relatively shallow end goosenecks. y

Similar characters of reference designate corresponding parts throughout the several views. Y l

rEhe invention is shown as'applied to the forward portion of the main fraine,but it is equally as applicable to the rear portion of said frame.

The improved shock absorber is combined with each side bar of the main frame, the latter being arranged below the axles 2, and it involves as its principal elements the main spring 3 and a cushioning means, preferably an air cushion for which the shock transmitting element and the main frame -or a part fixed to the latter, furnish opposed bearings.

Specification of Letters Iatent.

y Patented Apr. Y8', 1913.- Appiication fried september io, i912. seriaiNanae.

I In Fig. 1, the shock 'transmitting element is `shown at 4, the air cushion at 5, andthe v links which connect, thel adjoining ,ends ofy the shock transmitting element-r andthecrfiain;

spring at 6. The spring .3, the element 4,

the lair cushion 5, and theirappurtenances,-i` are arranged in a commonvertical plane. The element 4 is preferably in the nature of a spring bar of the same length-fas `the spring 3- and, ltogether with said spring is arranged above the corresponding bar, 1.

a part of the side bar l. The air cushion,

comprises an elongated pneumatic tube which fits between, and.take`s its-bearings against, the-bar 4 and the fpart"- 8.- The spring 3 is preferably employed :inconnecf Tlie bar 4 is preferably vloalanceld and for v tion with a longitudinal springnlba'r .9` ofsubstantially greater length thangsaid springA and, which, ineffect, forms a, part thereof; The central portions of the springB-andthe lso bar 9 are'connected to one another andthe axle 2, and one endof the. bari? is pivotally connectcdito the ygooseneck l0 at thev end of the bar .l while the other end o-fjthe bar v 9 is connected by a link ll to said bar l. The link 11 allows the bar 9 to' yieldunder the thrust or pull of thevehicle and consequent-ly.'v by virtue ofthe provision .of the bar 9, the spring 3 is"` at all times freie to etecy tively receive the first vibratory...impulsesv The links G at each -end of thegspring 3 forni a connecting support for the shock transmitting bar 4 and the latter, owing t-o its connection with the links 6 and to its central connection, constitutes a balanced bed upon which the vair cushion uniformly rests, IOwing to the manner of supporting and balancing the bar 4 and to its relation tothe air cushion 5, thc compression of the air cushion may start at either extremity thereof, so that a wave-like cushioning action is produced which is of the greatest etiiciency in uniformly absorbing .practically all of the vibrations, even the last ones of slight and reactionary character. It follows that the vehicle is insulated from shocks and vibrations and that the mechanisms thereof are elliciently vprotected against tions of said spring are gradually and sensiare absorbed. It will, moreover, be noted thatthe construction above described 'and other constructions Within the purview of Athe invention do not entail any stiening of the main spring beyond the strength required tofproperlyl carry its load, but vide for taking up any shock ,or vibrations which may prove greater than its` capacity to care for and absorb. t i

The construction shown in Fig. 2 is similar in its principles and'in the structural elements employed to the construction shown 'in Fig. .1, but differs slightly in details of arrangement and is intended for' use in connection with vehicle frames in which the bend or 'gooseneck 10 at the end of the side `bar l isof slightccurvature and extent. In this case, as in the previous embodiment, the side bar 1' furnishes la bearing for the y cushion, but the latter instead ofbeing arranged above the side barV and under the frame 8, is arranged under the side bar. The balanced bed for the cushion comprises a =bar LLavvhich is generally-similar to the har et, but is pivotally suspended from and under the side bar as by a central .connection 7EL and is connected by' hanger links '6% to thelend of the spring 3. The spring 3 and the spring bar 9 may be arranged under the axle instead of-above it as-in the rst instance.

The construction shownv in Fig. 2 operates l with a side bnr of a vehicle frame, the latter being hung below the axle, of a longitudinallyT disposed springvbar supported by the axle and having its ends connected to the main frame, one of the connections comprising,- a link, a'longitudinally disposed shock transmitting bar, a longitudinally disposed main spring supported centrallyl on the spring bar, connections between the main spring and the shock transmitting bar, and a cushioning agent for which said side bar and said shock transmitting bar furnishes opposed bearings.

2. In a shock absorber, the combination with a side bar, of a vehicle frame, the latter being hung below the axle,"of a longitu linally disposed spring bar supported by the axle and having its ends connected to the main frame, one of the connections comprising a link, a second longitudinally disposed spring ban which serves as a shock transmitting element, a longitudinal disposed main spring supported centrally on said first named spring bar, link connections between the ends of the main spring and the ends of the second spring bar, a ixed -central pivotal connection for'the second spring bar, and an elongated pneumatic cushioning tube for which said side bar and the second spring; bar furnish opposed bearings.

In testimony whereof lI have hereunto set my hand in presence of two subscribing Witnesses.

IVALTER Il. COIQ. Witnesses: 1 s

THOMAS R. RIcHaRDsoN, Renner WATERMAN. 

